Washington, Dec. 5 -- US First Lady Melania Trump has slammed a law professor who made a joke involving her son Barron Trump during impeachment inquiry hearing of President Donald Trump on Wednesday.

''A minor child deserves privacy and should be kept out of politics. Pamela Karlan, you should be ashamed of your very angry and obviously biased public pandering, and using a child to do it,'' Ms Trump tweeted.

Ms Trump said that the Karlan, an impeachment witness for House Democrats, went over the line in bringing up Barron Trump's name, CNN reported. While testifying, professor Karlan had said, ''Kings could do no wrong because the king's word was law. Contrary to what President Trump has said, Article Two does not give him the power to do...